716358787921 has 16 divisors (see below), whose sum is σ = 819977292160. Its totient is φ = 613061136000.

The previous prime is 716358787909. The next prime is 716358787943. The reversal of 716358787921 is 129787853617.

716358787921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 716358787921 - 2⁹ = 716358787409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (716358787981) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20746171 + ... + 20780671.

It is an arithmetic number, because the mean of its divisors is an integer number (51248580760).

Almost surely, 2^716358787921 is an apocalyptic number.

It is an amenable number.

716358787921 is a deficient number, since it is larger than the sum of its proper divisors (103618504239).

716358787921 is a wasteful number, since it uses less digits than its factorization.

716358787921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39064.

The product of its digits is 35562240, while the sum is 64.

The spelling of 716358787921 in words is "seven hundred sixteen billion, three hundred fifty-eight million, seven hundred eighty-seven thousand, nine hundred twenty-one".